The following brief report on incendiary disks dropped by German aircraft over England is taken
from Tactical and Technical Trends,
No. 16, Jan. 14, 1943.

[DISCLAIMER: The following text is taken from the U.S. War Department
publication Tactical and Technical Trends. As with all wartime
intelligence information, data may be incomplete or inaccurate. No
attempt has been made to update or correct the text. Any views or
opinions expressed do not necessarily represent those of the website.]

INCENDIARY LEAVES

It has been reported that incendiary disks, 9 inches in diameter and
having the appearance of yellow crepe rubber, have been found on the east coast of
England. They appear to have been dropped by enemy aircraft, and are probably
intended to set fire to crops and woods.

These incendiary leaves are thought to contain a phosphorous compound
and burst into flame when dry. There is no risk of explosion if only small
quantities are present.

If found, such leaves should be kept wet and should not be touched with
bare hands. They may be disposed of by placing them, in small quantities, in a
fire in the open. When the leaves are picked up, the residue of inflammable
material on the ground may cause a fire after it has become dry. Such residue
should be carefully watched until it is completely burned out.

It is dangerous to dispose of the leaves by throwing them into inland
waters or the sea, since there is always the possibility that they may be washed
up on to vulnerable objectives.